Head of California Air Resources Board Takes to Twitter to Teach the History of Smog

California Air Resources Board (CARB) chair Mary Nichols tweeted out a thread yesterday that summed up some of the history behind California’s efforts to clean up car emissions. Those efforts are, once again, under threat from the federal government, as the EPA has published plans to loosen standards for vehicle fuel efficiency as well as greenhouse gas emissions.

The proposed rule would also remove California’s right to set its own standards–even though the issue of California receiving a waiver to set its own standards has been settled in federal court several times already. Read more